[**brk-client**](../README.md) *** [brk-client](../globals.md) / DateRangeBuilder # Interface: DateRangeBuilder\ Defined in: [Developer/brk/modules/brk-client/index.js:1416](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L1416) ## Type Parameters ### T `T` ## Properties ### fetch > **fetch**: (`onUpdate?`) => `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> Defined in: [Developer/brk/modules/brk-client/index.js:1417](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L1417) Fetch the range #### Parameters ##### onUpdate? (`value`) => `void` #### Returns `Promise`\<[`DateSeriesData`](../type-aliases/DateSeriesData.md)\<`T`\>\> *** ### fetchCsv > **fetchCsv**: () => `Promise`\<`string`\> Defined in: [Developer/brk/modules/brk-client/index.js:1418](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L1418) Fetch as CSV #### Returns `Promise`\<`string`\> *** ### then > **then**: [`DateThenable`](../type-aliases/DateThenable.md)\<`T`\> Defined in: [Developer/brk/modules/brk-client/index.js:1419](https://github.com/bitcoinresearchkit/brk/blob/5bf06530ce84cd1829c2f934e5baded9c9125d45/modules/brk-client/index.js#L1419) Thenable